Horse Books

Question 1

Answer 1

Know these

Question 2

Answer 2

Attachment of the collateral ligaments of the distal interphalangeal joint.

Question 3

Answer 3

separate center of ossification of the palmar processes

Question 4

Answer 4

pedalostitis

Question 5

Answer 5

Osseous cyst like lesion

Question 6

Answer 6

Enthesopathy of the common digital extensor

Look for other changes in the DIP to make it clinical.

Question 7

Answer 7

Reabsorption lesion noted at the attachment of the distal impar and DDF

Question 8

Answer 8

DIP osteoarthritis

Question 9

Answer 9

Mineralization of the DIP consistent with DJD.

Question 10

Answer 10

Question 11

What would you think if the distal impar ligament was torn?

Answer 11

The navicular bone would deviate proximally.

Question 12

Answer 12

Look for the attachment sites.

Question 13

Answer 13

insertion of the:

1. oblique sesamoidean ligament
2. the distal digital annular ligament
3. the axial palmar ligament of the proximal interphalangeal joint
4. the superficial abaxial ligament of the proximal interphalangeal joint

Question 14

Answer 14

Dorsal subluxation

Question 15

Answer 15

1. (white arrows) Representing enthesopathy at the origin of the ligament to the medial ungular cartilage.
2. Proximal attachment of the distal digital annular ligament (arrowheads).

Question 16

Answer 16

Capsular attachment of the DIP and therefore DJD

Question 17

Answer 17

Site of insertion of the proximal digital annular ligament

Question 18

Answer 18

entheseous new bone at the insertion of the lateral digital extensor tendon

Question 19

Answer 19

proliferative synovitis

Question 20

Answer 20

Proliferative synovitis

Chronic degenerative suspensory desmopathy.. the proximal sesamoids are distally displaced.

Question 21

Answer 21

1. Mineralization secondary to chronic subcutaneous abscessation
2. dorsoproximal fragment
3. Osteoarthritis

Question 22

Answer 22

Each fragement has a trabecular pattern.

This is an ununited lateral plantar process of the proximal phalanx

Question 23

Answer 23

Osteochondral fragment of P1.

Question 24

Answer 24

Cyst-like lesion.

Question 25

Answer 25

Infectious osteitis

Question 26

Answer 26

Infectious sesamoditis secondary to penetrating wound

Question 27

Answer 27

Proximal sesamoiditis 1. Young horses this has a good prognosis. 2. This may be related to suspensory or sesamoidean ligament injury. 3. Articular osteophytes are consistent with DJD

Question 28

Answer 28

Remodeling of the bony secondary to stress. Pain associated wtih this is likely subchondral bone pain. Common in racing horses.

Question 29

Answer 29

Avulsion of the proximal annular ligament

Question 30

Answer 30

Apical fracture of the proximal sesamoid

Question 31

Answer 31

Inactive (smooth and distinct) mineralization of the interosseous space.

Question 32

Answer 32

Insignificant exostosis

Question 33

Answer 33

Transvers compression fracture.

Question 34

Answer 34

Chronic fracture with concurrent suspensory desmitis.

Question 35

Answer 35

(white arrow) adjacent to the distal lateral aspect of the radius, **_a vestigial distal ulna_**. There is also a radiolucent zone (black arrow) in the distal lateral aspect of the radius which represents **_incomplete fusion of the lateral styloid process,_** which is an incidental finding

Question 36

Answer 36

Variations of the first carpal bones

Question 37

Answer 37

intercarpal desmitis.

Question 38

Answer 38

Exostosis causing impingement of the DDF

Question 39

Answer 39

Type C Osteomyelitis in a foal... cyst and synovial swelling

Question 40

Answer 40

Widening of the medial physis consistent with physitis.

Question 41

Answer 41

Osteochondroma with severe distention of the carpal shealth

Question 42

Answer 42

Slab fracture of the 3rd carpal bone